212012120210020 has 24 divisors (see below), whose sum is σ = 479473564167864. Its totient is φ = 78281398231296.

The previous prime is 212012120210003. The next prime is 212012120210029. The reversal of 212012120210020 is 20012021210212.

It is a happy number.

212012120210020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7507019131236 + 204505101078784 = 2739894^2 + 14300528^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212012120209976 and 212012120210003.

It is not an unprimeable number, because it can be changed into a prime (212012120210029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407715615529 + ... + 407715616048.

It is an arithmetic number, because the mean of its divisors is an integer number (19978065173661).

Almost surely, 2^{212012120210020} is an apocalyptic number.

212012120210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012120210020 is an abundant number, since it is smaller than the sum of its proper divisors (267461443957844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212012120210020 is a wasteful number, since it uses less digits than its factorization.

212012120210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815431231599 (or 815431231597 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212012120210020 its reverse (20012021210212), we get a palindrome (232024141420232).

The spelling of 212012120210020 in words is "two hundred twelve trillion, twelve billion, one hundred twenty million, two hundred ten thousand, twenty".